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Finding the Third Proportional to 8,928 and 10,431.75

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Solution

The third proportional to 8,928 and 10,431.75 is: 12,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928 : 10,431.75 = 10,431.75 : x
  2. Step 2: Convert to fraction form
    8,928/10,431.75 = 10,431.75/x
  3. Step 3: Cross multiply
    8,928x = 10,431.75 × 10,431.75
  4. Step 4: Simplify right side
    8,928x = 108,821,408.06
  5. Step 5: Solve for x
    x = 108,821,408.06/8,928
  6. Step 6: Final answer
    x = 12,188.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.